Pumping apparatus for oil-wells



No. 625,424. Patented May 23, I899. J. SHERIDAN.

PUMPING APPARATUS-FOR OIL WELLS.

(Application filed Aug. 23, 1898.

(No Model.)

DVITNESSES [NVENTOR ww JMZ/Wy g flmnf Q7 111 UNITED STATES PATENTOFFICE,

JAMES SHERIDAN, OF MARS, PENNSYLVANIA.

PUMPING APPARATUS FOR OIL-WELLS.

SPECIFICATION forming part of Letters Patent No. 625,424, dated May 23,1899.

Application filed August 23, 1898.

To all whom it may concern.-

Be it known that I, JAMES SHERIDAN, of Mars, in the county of Butler andState of Pennsylvania, have invented certain new and useful Improvementsin Pumping Apparatus for Oilells; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

My invention relates to an improvement in pump apparatus for oil-wells,and more particularly to an improved stirrup by means of which thepull-rods are connected with the pumping-rig.

Heretofore stirrups for connecting the pullrods to the pumping-rig havebeen made of round iron of different sizes and of a thickness from oneand a quarter inches upward. 'When in use, the wear is on the cross-barof the stirrup, and when this cross-bar becomes small (which it will ina comparatively short time) it is necessary to discard the whole stirrupand replace it with a new one.

It is the object of myinvention to obviate the-loss and inconveniencethus occasioned and to so construct a stirrup that the part on which thewear comes shall be removable and adapted to be easily and quicklyremoved when worn and replaced by a new part.

With this object in view the invention consists in certain novelfeatures of construction and combinations and arrangements of parts, ashereinafter set forth, and pointed out in the claims.

In the accompanying drawings, Figure lis a view of my improved stirrup.Fig. 2 is a sectional view. Fig. 3 is a detail view of the removablewearing-piece.

A represents a stirrup, made of suitable metal and comprising parallelmembers 1 1, an integral cross-bar 2, and shanks 3 on the parallelmembers 1, said shanks being perforated for the accommodation of bolts,whereby the stirrup can be secured to a pull-rod. The parallel members1, and also the crossbar 2 of the stirrup, are made angular incrosssection, whereby to forminwardly-projecting ribs a a on the members1 and an inwardlyprojecting rib b on the cross-bar2 of the stirrup. Aremovable wearing piece or bar 4,

having a rounded outer face, is disposed be- Serial No. 689,361. (Nomodel.)

tween the parallel members 1 of the stirrup and provided at its endswith notches 5 5 to receive the ribs a on the'parallel members of thestirrup, bymeans of which ribs the wearing piece or bar is preventedfrom lateral displacement. In order to further insure the wearing-baragainst displacement when in use and to retain it at all times in properrelation to the cross-bar of the stirrup, said wearing-bar is made witha longitudinal groove (made V-shaped in cross-section) to receive thesimilarly-shaped rib b on said cross-bar of the stirrup.

By means of the construction and arrange.

ment of parts above described it will be seen that the wearing-bar willbe kept properly in place during the operation of the apparatus and thatwhen it becomes worn it can be readily removed and replaced by a new oneat a small cost and Without the necessity of removing the stirrup fromthe pull-rod.

My improvements are simple in construction, comprise few parts, resultin the economical operation of oil-well pumping apparatus, and areeffectual in all respects in the performance of their functions. I

Slight changes might be made in the details of construction of myinvention without departing from the spirit thereof or limiting itsscope, and hence I do not wish to limit myself to the precise detailsherein set forth. 1

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with a stirrup comprising two parallel membersconnected by a cross bar, of a wearing-bar removably disposed betweenthe parallel members of the stirrup and held in place thereby, saidremovable Wearing-bar bearing against the cross-bar of the stirrup,substantially as set forth.

2. The combination with a stirrup comprising parallel members havingribs on their inner faces and a cross-bar connecting said parallelmembers, of a removable wearingbar bearing against the inner side ofsaid cross-bar and having notches at its ends to receive the ribs on theparallel members of the stirrup, substantially as set forth.

3. In a stirrup, the combination with par allel members having ribs anda cross-bar having a. rib, of a removable wearing-bar having a groove toreceive the rib' on the cross-bar and having notches in its ends toreceix e the ribs on the parallel members of the stirrup, substantiallyas set forth.

4. In a stirrup, the combination with parallel members and a cross-barconnecting the same, said parallel members and cross-bar being angularin cross-section, of a wearingbar removably disposed within the stirrupand against the cross-bar, said wearing-bar having a groove to receivethe angular crossbar and having notches in its ends to receive theangular parallel members of 'the stirrup, substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JAMES SHERIDAN.

Witnesses:

W. W. DUNCAN, H. B. PATTERSON.

